Screw-stem lubricator



W. F. KELLY.

SCREW STEM LUBR| CATOR.

APPLICATION FILED mums. 1919.

1,367,482, Patented Feb. 1, 1921.

WFAEz/y NU bu coo UNITED s'rAr ss PATENT OFFICE.

WILLIAM F. KELLY, 0F SYRACUSE, NEW YORK.

SCREW-STEM LUBBICATOR.

Application filed June 25,

To all whom it may concern:

Be it known that 1, "WILLIAM l' KELLY, a citizen of the United States, residing at Syracuse, in the county of Onondaga and State of New York, have invented a new and useful Screw-Stem Lubricator, of which the following is a specification.

The device forming the subject matter of this application is a lubricator adapted to be applied to rotating members, and one object of the invention is to provide novel means whereby the flow of oil from container may be regulated through the instrumentality of a valve and means for adjusting the movement of the valve. Another object of the invention is to improve the construction of the container portion of the lubricator.

It is within the province oi" the disclosure to improve generally and to enhance the utility 01' devices of that type to which the invention appertains.

W ith the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in side elevation, a lubricator constructed in accordanace with the invention; Fig. 2 is a longitudinal section wherein parts have been left in elevation; Fig. 3 is a cross section on the line 3--3 of Fig. l; and Fig. 4. is a fragmental longitudinal section showing the filling plug and attendant parts. I

In carrying out the invention there is provided a container, denoted generally by the numeral 1. The container 1 comprises a head 2 having a marginal flange 3, the head being supplied with a threaded axial opening 4:, and with a threaded opening 5, located to one side of the opening 4. The container 1 embodies a foot 6 having a marginal flange 7 and a neck 8 including a reduced part 9 externally threaded as shown at lOto accommodate a lock nut 11, the lock nut constituting means whereby the container may be held on a pulley or other rotating part. The bore of the neck 8 1s denoted by the numeral 29 and is reduced at Specification of Letters Patent.

l atented Feb. 1, 1921.

1919- Serial NO. 306,528.

its lower end to form an opening 12. At the inner end ofthe opening 12, a concaved seat is fashioned. Gaskets 15 abut against the head 2, within the contour of the flange 3, and against the foot 6, within the contour of the flange 7. A tubular body 16, preferably made of glass, is provided, the ends of the body being received within the flanges 3 and 7,. the extremities of the body abutting against the gaskets 15. The head 2 is connected with the foot 6 by means of any de sired number of screws 17 having heads engaging the member 2, the screws being threaded into the foot 7. Obviously, the screws 17 serve to bind the head 2 and the foot 6 on the gaskets 15, thereby rendering the container 1 oil-tight and air-tight.

A ball valve 18 is located in the bore 29 of the neck 8 of the foot 6 and is adapted to be received in the seat 1 1. The travel of the ball valve 18 longitudinally of the bore 29 is adjusted by means of a member 19 including a foot 20 having a concavity or recess 21 shaped to approximate the contour of the ball 18. The adjusting member 19 is threaded into the head 2 and is held. in adjusted. positions by means of a lock nut 23, carried by the threaded. portions 2 of the adjusting member, externally of the head 2, and adapted to bear upon the head 2. The adjustingmember 19 carries, externally of the container 1, a finger piece 2% which, ordinarily, is mounted on the adjusting member after the adjusting member has been threaded into the head 2.

A screw plug 25 is threaded into the opening 5 of the member 2 and is provided at its upper end with an enlarged head 26. The screw 25 has a shoulder 27 located inwardly of the head 26. A washer 28 surrounds a portion of the screw 25 and abuts against the shoulder 27. A flexible element 30, such as a chain, is attached to the inner end of the screw plug 25 and terminates in an enlargement 31, such as a ring, the diameter of the ring 31 being greater than the diameter of the threaded opening 5 in the head 2.

In practical. ooera-tion, the ball valve 18 reciprocates in the bore 29, the amount of oil fed through the opening 12 being regulated by the extent of travel of the ball. The throw of the ball, in turn, may be adjusted by advancing or retracting the member 19. Since the member 19 is threaded at 22 into the head 2, the adjusting member may be rotated readily by means of the part 24, and when the desired adjustment has been attained, the member 19 may be held in place by advancing the lock nut 28 until the same bears against the head 2. The opening d is closed hermetically by the threaded portion of the adjusting member 19 and by t1 e lock nut 22. The screw plug 25 may be ad vanced until the washer 28 is bound between the shoulder 27 and head 2, a hermetic closure of the opening 5 being eii'ected. Since the washer 28 is spaced from the head 28 by the shoulder 27, the head 26 is always accessible so that the screw may be threaded into the head without d'ii'iiculty and be removed r'r'om the head, with equal facility. The ring 81, being larger in diameter than the opening 5, prevents the screw plug 25 from being detached completely from the head 3, when 1e plug is threaded out of the opening 5 during; the process of filling the container. Since the adgustnig member 19 is supplied at its inner end with the enlarged toot 20, the oil is prevented from having too rapid movement in the bore 29 and, at the same time, an adequate surface is afforded for contact with the ball valve 18, when the later reciprocates in the bore 29.

The foot 20 constitutes a baffle which, while permitting the lubricant to flow into the outer portion of the 9, is adapted to prevent the lubricant from being emptied back into the chamber 10 by the motion imparted to the lubricator by the machine part to which it is attached, whereby to insure the feeding of the lubricant to the bearing.

Having thus described the invention what 7 is claimed is 1. A lubricator comprising a closed chamber a hollow stem communicating with said chamber and extending downwardly "from the bottom thereof, said stem being of con" rse'msa siderable length and having the lower end of its bore reduced valve seat formed in the shoulder provided by the reduction of the bore of said stem, a ball valve normally resting upon said seat a rod having threaded connection with the top of the chamber and extending through the chamber into said stem, the diameter of said rod being considerabl less than the diameter of the bore of said stenn and a head formed on the lower end of said rod having a diameter greater than the diameter oi said rod and less than the diameter of the bore of said stem and provided in its under face with a recess adapted to receive said ball when it is forced its seat, said rod being adjustable to regulate the distance of the travel of said ball from said seat.

A lubricator comprising a closed chamber, a hollow stem extending from and comv-nicatingwith said chamber, a valve seat stem adjacent the outer end of a ball valve adapted to be moved on i or" said seat by tie motion im- V the lubricator by the machine part to whi h it is connected, and a combined battle and stop located within said stem beyond said chamber and inwardly of said valve seat and adapted to prevent the motion of the lubricator from emptying the lubricant between said bathe and stop and said valve seat back into said chamber and also adapted to control the movement of said valve in a direction away from said seat.

in. testim ny that I claim the foregoing; as my own, i have hereto afi'ixed my signature in the presence of two Witnesses.

WILLIAM r. KELLY.

Witnesses C. F. Nonrrrnur, VANS A. Dovnv 

